How do we measure the Sun's:

• Luminosity?

• Mass?

• Radius?

• Temperature?




What if the Sun were much further away. Could we use the same methods?? What if we didn't know the distance to the Sun?

The DISTANCE is crucial to accurately determining characteristics of Stars (and just about everything). Some of the main methods include:




Parallax







Via Association







Apparent Luminosity (if Absolute L is known)


recall: